William tbainoe



(No Model.)

W. TRAINOR.

LOW WATER INDICATOR FOR STEAM BOILER3. I No. 247,437. 1 Patented Sept. 20,1881.

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UNITED STATES PATENT OFFICE.

WVILLIAM TRAINOR, OF TROY, NEW YORK.

LOW-WATER INDICATOR FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 247,437, dated September 20, 1881.

Application filed August 4, 1881. (N0 model.)

To all whom it may concern:

Be it known that I, WILLIAM TRAINOR, of Troy, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Low-W'ater Indicators for Steam-Boilers; and I do hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, which form a part of this specification.

Figure 1 is a front view, Fig. 2 is a vertical sectional view on the line a: w, and Fig. 3 is a vertical sectional view on the line y y, of my invention.

Corresponding parts in the several figures are denoted by. like letters of reference.

This invention relates to that class of steamboiler feeders and regulators which automatically sound an alarm when the water in the boiler reaches a certain height; and it consists in certain improvements in the construction and arrangement of the same, which will be hereinafter fully described, and particularly pointed out in the claim.

In the drawings hereto annexed, A represents the end of a steam-boiler to which my invention is attached.

B G are pipes attached to the end of the cylinder, respectively at and below the waterline, and having swiveled knee-pipes D E, to which is swiveled a closed cylinder, F, having a gage-pipe, G. The end of the boiler is provided above the cylinder F with a bracket, H, to which is pivoted a lever, I, the lower end or arm of which is pivoted to an arm extending upward from the knee-pipe D by an intermediate connecting-rod, D

J is a pipe extending outward from the end of the boiler, above the bracket H, and carrying an ordinary steam-whistle, K, capable of being operated by an arm or lever, L, the end of which latter is connected by a pivoted connecting-rod, M, with the upper or outer end of the lever I, so that when the cylinder rises the alarm-whistle is automatically sounded. To counterbalance the weight of the cylinder'F, a suitable weight, N, is attached to the outer end of the lever I. 7

Below the cylinder, upon the end of the boiler, is secured a bracket, 0, havingalever, P, one end of which is connected by a pivoted rod, Q, with the lower end of cylinder F, so that when occasion shall require the said cylinder may be conveniently raised or lowered by hand power.

From the construction as above described it will be readily seen that the water-level must at all 'times be the same in the cylinder or vessel F as in the boiler. When the water in the latter becomes low the weight N will over balance the cylinder, thus raising the latter and sounding the alarm. A suitable mechanism for feeding water may also be operated automatically by-the cylinder F when thelatter ascends; but this is not shown in the drawings. The gage-tube G enables the state of the water to be at all times observed.

I am aware of the patents to Hopkins, No. 82,222, September 15, 1868, and Smith, No. 129,993, April 22, 1872, and I claim nothing therein shown; but,

Having thus described myinvention, I claim and desire to secure by Letters Patent of the United States As an improvement in low-water indicators,

the combination of the vertically-movable cylinder F, having gage-tube G, and swiveled to the end of a boiler by knee-pipes D E, the lever I, connecting-rod D and counter-weight N, connecting-rod Q, hand-lever P, and alarm mechanism K L M, all arranged and operating as herein described, for the purpose shown and specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

WILLIAM TRAINOR.

Witnesses:

GEORGE RICE, ARTHUR TREANoRJ 

